Effect of Sintering Temperature on Aging Resistance and Mechanical Properties of 3Y-TZP Dental Ceramic
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第2期
论文作者：张静超 李伟
文章页码：316 - 320
摘 要：In order to investigate the effect of sintering temperature on aging properties and mechanical properties of 3Y-TZP dental ceramic in simulated oral environment,3Y-TZP nanopowder compacts were pressurelessly sintered at 1 350 ℃,1 400 ℃,1 450 ℃,1 500 ℃,respectively,then were treated by soaking in artificial saliva（65 ℃,pH=7）for two months.The treated specimens sintered at 1 350 ℃ showed there was no phase transformation but whose strength and toughnesswere significantly improved（P<0.05）,while those sintered at 1 400 ℃-1 500 ℃ revealed a small amount of phase transformation and insignifi cant mechanical reinforcement（P>0.05）.No micro-cracks were detected but increment in lattice volume was found in all specimens.Lowering sintering temperature favors aging resistance and mechanical reinforcement of 3Y-TZP in a simulated oral environment.
张静超1,2,3，李伟1,2
1. State Key Laboratory of Oral Diseases,Sichuan University2. West China College of Stomatology,Sichuan University3. Hainan Stomatological Hospital
摘 要：In order to investigate the effect of sintering temperature on aging properties and mechanical properties of 3Y-TZP dental ceramic in simulated oral environment,3Y-TZP nanopowder compacts were pressurelessly sintered at 1 350 ℃,1 400 ℃,1 450 ℃,1 500 ℃,respectively,then were treated by soaking in artificial saliva（65 ℃,pH=7）for two months.The treated specimens sintered at 1 350 ℃ showed there was no phase transformation but whose strength and toughnesswere significantly improved（P<0.05）,while those sintered at 1 400 ℃-1 500 ℃ revealed a small amount of phase transformation and insignifi cant mechanical reinforcement（P>0.05）.No micro-cracks were detected but increment in lattice volume was found in all specimens.Lowering sintering temperature favors aging resistance and mechanical reinforcement of 3Y-TZP in a simulated oral environment.
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